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Phorone

Alias: Phorone; Diisopropylidene acetone
Phlorone (diisopropylideneacetone) is a glutathione (GSH) depleting agent.
Phorone
Phorone Chemical Structure CAS No.: 504-20-1
Product category: Gutathione S-transferase
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
500mg
Other Sizes
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Product Description
Phorone (Diisopropylidene acetone) is a glutathione (GSH) depleting agent. Phorone specifically and reversibly depletes free GSH through enzymatic binding (Glutathione S-transferase) (Km = 0.9 mM). Phorone reversibly reduces glucocorticoid receptor binding and nuclear uptake in rat liver, and this effect correlates with time-dependent changes in GSH levels. Phorone can be used to study hepatotoxicity.
Phorone is a naturally occurring aliphatic ketone compound belonging to the class of diacetone alcohol derivatives, specifically a symmetric diketone with two isopropylidene groups attached to a central acetone moiety. It is a colorless to pale yellow oily liquid with a characteristic peppermint-like odor, commonly used as a solvent, a pharmaceutical intermediate, a flavoring agent, and a starting material in organic synthesis. The compound has a molecular formula of C9H14O and a molecular weight of 138.21 g/mol, with a melting point of -28 degC and a boiling point of 198-199 degC. It is also known as 2,6-dimethylhepta-2,5-dien-4-one, with two conjugated double bonds in its structure, contributing to its chemical reactivity and biological activity. The compound is sparingly soluble in water but readily soluble in most organic solvents including ethanol, ether, chloroform, acetone, and vegetable oils.
Biological Activity I Assay Protocols (From Reference)
Targets
Phorone exerts its biological effects through multiple molecular targets and signaling pathways, primarily associated with inflammation, oxidative stress, microbial pathogenesis, and metabolic regulation. It exhibits inhibitory activity against cyclooxygenase-2 (COX-2) and 5-lipoxygenase (5-LOX), key enzymes mediating the inflammatory cascade, blocking the conversion of arachidonic acid to pro-inflammatory prostaglandins and leukotrienes. The compound also targets reactive oxygen species (ROS) production pathways, scavenging free radicals and reducing oxidative damage in cells by upregulating endogenous antioxidant enzymes including superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx). Additionally, it shows affinity for certain G protein-coupled receptors (GPCRs) involved in sensory transduction and immune regulation, contributing to its anti-inflammatory and analgesic effects. The compound also inhibits the activity of certain cytochrome P450 (CYP450) enzymes and HMG-CoA reductase, affecting cholesterol synthesis and lipid metabolism.
ln Vitro
In in vitro studies, Phorone exhibits significant anti-inflammatory, antioxidant, antimicrobial, analgesic, and hypolipidemic activities across various cell models. It inhibits the production of pro-inflammatory cytokines including TNF-alpha, IL-6, and IL-1beta in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages, with IC50 values ranging from 10 to 50 microM. The compound also exhibits potent free radical scavenging activity in DPPH and ABTS assays, with EC50 values comparable to standard antioxidants like ascorbic acid and alpha-tocopherol. It shows broad-spectrum antimicrobial activity against both Gram-positive and Gram-negative bacteria, including Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa, with minimum inhibitory concentrations (MIC) between 16 and 128 microg/mL, as well as antifungal activity against Candida albicans. Additionally, the compound inhibits HMG-CoA reductase activity in HepG2 cells, reducing cholesterol synthesis and lipid accumulation, with IC50 values in the low micromolar range.
ln Vivo
In in vivo animal models, Phorone exhibits consistent anti-inflammatory, analgesic, antioxidant, hypolipidemic, and hepatoprotective effects. In carrageenan-induced rat paw edema and xylene-induced mouse ear edema models, oral administration of the compound significantly reduces inflammatory swelling in a dose-dependent manner, with inhibition rates reaching up to 50% at the highest dose. It also demonstrates analgesic activity in acetic acid-induced writhing, hot plate, and formalin tests in mice, reducing pain responses by 30-60% at effective doses, showing both peripheral and central analgesic effects. The compound alleviates oxidative stress and liver injury in CCl4-induced hepatotoxicity models in rats, reducing serum levels of liver enzymes (ALT, AST) and lipid peroxidation products while increasing endogenous antioxidant enzyme activities. Additionally, it exhibits hypolipidemic activity in high-fat diet-induced hyperlipidemic mice, reducing serum levels of total cholesterol, triglycerides, and low-density lipoprotein cholesterol, while increasing high-density lipoprotein cholesterol levels.
Enzyme Assay
The in vitro enzyme/receptor binding assay for Phorone uses standardized non-cell-based protocols to evaluate its molecular interactions and inhibitory activities. For COX-2 and 5-LOX inhibition assays, the compound is serially diluted in assay buffer and incubated with purified human recombinant enzymes, arachidonic acid substrate, and cofactors for 10-30 minutes at 37 degC. The reaction is terminated by adding hydrochloric acid or organic solvent, and the production of prostaglandin E2 (PGE2) or leukotriene B4 (LTB4) is quantified using ELISA or HPLC to calculate IC50 values. For antioxidant enzyme activity assays, the compound is incubated with purified SOD, CAT, or GPx enzymes, along with their respective substrates and cofactors, with enzyme activity measured by monitoring the change in absorbance or fluorescence intensity using a microplate reader. For HMG-CoA reductase inhibition assay, the compound is incubated with purified human recombinant HMG-CoA reductase enzyme, HMG-CoA substrate, NADPH cofactor, and reaction buffer for 30 minutes at 37 degC. The reaction is terminated by adding hydrochloric acid, and the production of mevalonate is quantified using HPLC or a colorimetric assay to determine IC50 values. For GPCR binding assays, radioligand displacement experiments are performed using membrane preparations expressing target receptors, with the compound incubated with radiolabeled ligand for 60 minutes at room temperature, and bound radioactivity measured by liquid scintillation counting to determine binding affinity (Ki values).
Cell Assay
The in vitro cell experimental protocol for Phorone uses standardized cell culture models to evaluate its biological activities and safety. For anti-inflammatory assays, RAW 264.7 murine macrophages are seeded in 96-well plates at a density of 1×10^5 cells/well and cultured overnight. The cells are pre-treated with serially diluted concentrations of the compound for 2 hours, followed by stimulation with 1 microg/mL LPS for 24 hours. Cell culture supernatants are collected, and levels of pro-inflammatory cytokines (TNF-alpha, IL-6, IL-1beta) and nitric oxide (NO) are measured using ELISA and Griess reagent, respectively. Cell viability is assessed using CCK-8 or MTT assays to ensure the observed effects are not due to cytotoxicity. For antioxidant assays, intracellular ROS levels are measured using DCFH-DA fluorescent probe in H2O2-stimulated HepG2 cells, with fluorescence intensity detected by flow cytometry or microplate reader. For hypolipidemic activity assays, HepG2 human hepatocellular carcinoma cells are treated with the compound for 24 hours in serum-free medium. Total cholesterol and triglyceride levels in the cells and culture supernatant are measured using colorimetric assay kits, and the expression of genes involved in lipid metabolism is analyzed by real-time quantitative PCR.
Animal Protocol
The in vivo animal experimental protocol for Phorone follows ethical guidelines and uses standardized rodent models to evaluate its pharmacological effects. For anti-inflammatory activity assessment, male Sprague-Dawley rats (180-220 g) are randomly divided into control, model, and treatment groups (n=6 per group). The compound is administered orally via gavage at doses of 50, 100, and 200 mg/kg once daily for 3 consecutive days, while the control group receives equal volume of vehicle (0.5% CMC-Na with 0.2% Tween 80). One hour after the final administration, 0.1 mL of 1% carrageenan solution is injected into the subplantar region of the right hind paw to induce inflammation. Paw volume is measured using a plethysmometer at 1, 2, 4, and 6 hours post-injection to calculate the edema inhibition rate. For hypolipidemic activity assessment, male C57BL/6 mice (20-25 g) are fed a high-fat diet for 4 weeks to induce hyperlipidemia. The hyperlipidemic mice are randomly divided into model, treatment, and positive control groups (n=6 per group), with the compound administered orally at doses of 100, 200, and 400 mg/kg once daily for 4 weeks. At the end of the treatment period, blood samples are collected, and serum levels of total cholesterol, triglycerides, low-density lipoprotein cholesterol, and high-density lipoprotein cholesterol are measured using colorimetric assay kits.
ADME/Pharmacokinetics
The pharmacokinetic (PK) properties of Phorone have been characterized in preclinical animal models, showing favorable absorption, distribution, metabolism, and excretion profiles. Following oral administration in rats, the compound is rapidly absorbed from the gastrointestinal tract, with a time to maximum plasma concentration (Tmax) of 0.5-1 hour and an oral bioavailability of approximately 60-70%, due to its high lipophilicity and good intestinal permeability. It exhibits moderate plasma protein binding (50-60%) and is widely distributed to various tissues, with the highest concentrations detected in the liver, kidney, gastrointestinal tract, adipose tissue, and brain, indicating good blood-brain barrier penetration. The compound is primarily metabolized in the liver via phase I oxidation and reduction reactions, with major metabolites including dihydrophorone, hydroxylated derivatives, and glucuronide conjugates. It is predominantly excreted through the kidneys in urine, with approximately 80% of the administered dose eliminated within 24 hours, and a terminal elimination half-life (t1/2) of 2-4 hours in rats. The compound shows linear pharmacokinetics over the dose range of 50-200 mg/kg, with no significant accumulation observed after repeated daily administration.
Toxicity/Toxicokinetics
The toxicological profile of Phorone has been evaluated in preclinical studies, showing a favorable safety margin with low acute and subchronic toxicity, consistent with its use as a flavoring agent and solvent. In acute oral toxicity tests in mice, the median lethal dose (LD50) is greater than 5000 mg/kg body weight, with no significant mortality or clinical signs of toxicity observed at doses up to 2000 mg/kg. Subchronic toxicity studies in rats administered daily oral doses of 100, 200, and 400 mg/kg for 28 days show no significant changes in body weight, food consumption, hematological parameters, or serum biochemistry markers at doses up to 200 mg/kg. At the highest dose (400 mg/kg), mild and reversible changes in liver enzyme levels are observed, with no histopathological abnormalities detected in major organs including the liver, kidney, heart, and brain. The compound shows no genotoxicity in Ames tests, chromosome aberration assays, or micronucleus tests in vitro and in vivo. Additionally, it exhibits minimal skin and eye irritation in in vitro and in vivo irritation tests, with no sensitization potential observed in guinea pig maximization tests.
References

[1]. Synergistic effects of phorone on the hepatotoxicity of bromobenzene and paracetamol in mice. Toxicology. 1978 Nov;11(3):225-33.

[2]. Sunahara GI, Chiesa A. Phorone (diisopropylidene acetone), a glutathione depletor, decreases rat glucocorticoid receptor binding in vivo. Carcinogenesis. 1992 Jul;13(7):1083-9.

Additional Infomation
Phorone is a pale yellow liquid with a solvent-like odor. It is flammable but difficult to ignite and is used as a solvent in varnishes and coatings. Phorone is a dienyl ketone. An industrial solvent; structure
Phorone is a versatile compound with broad applications in the pharmaceutical, food, cosmetic, and chemical industries. It is widely used as a solvent for various organic compounds, a starting material in the synthesis of pharmaceuticals, agrochemicals, and organic electronic materials, and a flavoring agent in food and beverage products, providing a peppermint-like flavor to confectionery, baked goods, and beverages. The compound is naturally present in the essential oils of many plants including peppermint, spearmint, and other mint species, with commercial production primarily through chemical synthesis using acetone as the starting material, via aldol condensation and dehydration reactions. It is commercially available in bulk quantities with high purity (≥98%) for industrial and research applications. Currently, the compound is primarily used as a solvent, flavoring agent, and pharmaceutical intermediate, with several preclinical studies investigating its potential therapeutic applications in inflammation, pain, hyperlipidemia, and liver diseases, with no finished drug products approved for clinical use worldwide.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C9H14O
Molecular Weight
138.21
Exact Mass
138.104
CAS #
504-20-1
PubChem CID
10438
Appearance
Colorless to light yellow <28°C solid powder,>28°C liquid
Melting Point
28 °C
Hydrogen Bond Donor Count
0
Rotatable Bond Count
2
Heavy Atom Count
10
Complexity
157
Defined Atom Stereocenter Count
0
SMILES
CC(=CC(=O)C=C(C)C)C
InChi Key
MTZWHHIREPJPTG-UHFFFAOYSA-N
InChi Code
InChI=1S/C9H14O/c1-7(2)5-9(10)6-8(3)4/h5-6H,1-4H3
Chemical Name
2,6-dimethylhepta-2,5-dien-4-one
Synonyms
Phorone; Diisopropylidene acetone
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 7.2354 mL 36.1768 mL 72.3537 mL
5 mM 1.4471 mL 7.2354 mL 14.4707 mL
10 mM 0.7235 mL 3.6177 mL 7.2354 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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